Starting device for explosion-motors.



l No. 802,284. PATENTED OCT. l?, 1.905.

W. HAGSPIEL., STARTING DEVICE FOR BXPLUSION MOTORS.

APPLIUATION FILED JULY 24, `1903.

B SHEETS-SHEET 2.

No. 802,284. PATENTED OUT. 17, 1905. W. HAGSPIEL.

STARTING DEVICE POE EXPLOSION MOTORS.

APPLICATION FILED JULY 24,1903.

BSHEETS-SHBET 3.

munlw e annum 1:0). vnuvounlonmwiws. msmumon, n c.

llbllllED STATES `PATENrl" FFlEE.

STARTlNG DEVICE FR EXPLOSION-IVITOIHS..

Specification of Letters Patent.

atenteo'l Oct. 17, 1905.

Application filed July 24, 1903. Serial No. 166,909.

T0 all whom, it muy concern;

Beit known that I, VILHELM HAGSPIEL, manufacturer, a citizen of the Empire of Germanyand a resident of 10-12 lmbrderstrasse, Ludwigsburg, Germany, have made certain new and useful Improvements in Starting Devices for Explosion-Motors, of which the following is a specification.

This invention relates to starting mechanism for explosionmotors and operated by hand or through the medium of auxiliary devices which directly the main motor commences to work is thrown out of action automatically. The automatic disengagement is effected not only when the driving-shaft has acquired a greater velocity than that of the starting mechanism, but also when by premature or imperfect firing the shaft of the motor is driven in the reverse direction.

The arrangementconsists, essentially, in the introduction of a device or means interposed between its coupling and the driving-shaft, which automatically effects the disengagement at the moment of back travel of this latter in case of premature firing.

As compared with analogous devices the principal advantages consist in theabsence of any iixed connections with the frame of the motor and of springs subject to wear.

The invention is illustrated in the accompanying drawings, which show two arrangements, and wherein- Figures l to 4 and Fig. 6 show a starting device or mechanism adapted to be operated by hand, andY Fig. 5 shows a modification in which an auxiliary device is used. Fig. l represents a part sectional elevation of the starting mechanism arranged to be worked by hand. Fig. 2 is a front elevation of the crank. Fig. 3 is a section taken on the line a; a of Fig. l. Fig. 4 is a detailed view in elevation of the clutch-sleeve of the auxiliary crank. Fig. 5 shows in section the starting mechanism adapted to be actuated by auxiliary means.

Fig. 6 represents a side elevation of the start-A ing mechanism arranged to be worked by hand, showing the position assumed by the parts when the engine is fired prematurely and the crank is disengaged from the powershaft as a result of such premature iiring.

Referring to Figs. l to t, the arrangement consists of a crank 7e, provided with clutchpieces a, which at the moment of starting bear against a carrier-pin t, rigidly connected to the power-shaft f, and turn this latter. rlhe carrier-pin may, however, be replaced by a sleeve-clutch. The sleeve e' of the main crank if: is mounted free to turn upon a sleeve i of an auxiliary or secondary crank a, iitting loosely on an extension f of the driving or power shaft. The handle l of the main crank is of segmental shape in cross-section and partially surrounds the rod or the sleeve ofthe auxiliary crank e. The clutch-pieces fn. of the sleeve 'L' are screw-shaped and adapted to enter spirallyshaped openings or slots 0 in the sleeve al of the auxiliary crank a and bear against the carrier-pin /t on the powensliaft. The relative movement of the two crank-handles is limited by a tenon or stud p, fixed to the sleeve of one of the cranks and guided in a spiral slot q in the sleeve of the other crank.

The operation of the hand-operated mechanism just described is as follows: The auxiliary crank e, to which is secured the main crank la by means of the pin p, extending throughf the slot q of the sleeve f/ into the sleeve d, is placed upon the power-shaftf, and the segmental handle lof the main crank le is turned until it overlaps the rod of the auxiliary crank a. 0n account of the pin j; working in the spiral slot Q the sleeve of the main crank will be caused to slide along' the sleeve Z of the auxiliary crank, and the crank u will approach the crank c. The clutchpieces fn, of the sleeve vl will then enter through the spirally-shaped openings or slots 0 in the sleeve d and will abut against the carrierpin or sleeveclutch carried by the power-shaftf. The two cranks are then turned together, one

` hand being kept on the handle Z and the other hand on the handle c, and motion will thereby be imparted to the power-shaft f. lf there be premature firing, the power or driving' shaft revolves in the opposite direction to that of the crank-handle, and the attendant by keeping his hand on the secondary crankhandle c maintains this latter in its movement; but the main crank-handle Z, which is driven backward by the pin /z/ on the power or driving shaft, will turn in the opposite direction. There is thus produced a relative movement of the two crank-handles, and the segmental handle Z, overlapping the sleeve or the rod moves away therefrom. This movement of the two crank -handles produces opposite movements of their sleeves and a', and by reason of the screw form of the clutch-pieces n and of the openings or slots 0, which serve them as guides, as well as by reason of the pinp, moving' in the spiral slot q, the clutchpieces of the sleeve 21 are caused to move into ICO IIO

the slots 0 and out of engagement with the pin It, so that there results a disengagement between the starting-crank and the driving or power shaft.

Then the speed of the motor is greater than that of the crank-handle, no relative and revei'se movement of this latter and of the auxiliary crank is produced; but the carrier-pin /L or the sleeve-clutch of the power-shaft will ride upon the inclined surfaces of the clutchpieces 'a of the sleeve i and move the cranks a and 7c longitudinally along' the shaft f away from the carrier-pin L.

In the modification shown in Fig. 5, in whic'n the motor is started b y means of an auxiliary motor, both the aforementioned handoperated cranks of the starting device are replaced by chain wheels. As an auxiliary motor a hydraulic motor is, by preference, employed, the power for which can, for example, be supplied through pipes. On the shaft 1/ of the auxiliary motor are two chainwheels, one of which, fa, is fast and the other, m, loose. They are connected together by a coupling-pin e. There are two of said pinsz shown, they being pressed outward by coiled springs, the power of which is such that said pins will be automatically disengaged from the wheel e as soon as the auxiliary motor has acquired about half of its effective power. The coupling by means of the pin (shown in the drawings) beingwell known, no description is required. On the power or driving' shaft g are two loose toothed Wheels r and s, the former of which is provided with screwshaped slots into which clutch-pieces n of like shape engage and which are in one with the toothed wheel .s'behind the wheelr. These clutch-pieces press against the pin L, which` as in the former arrangement, may b e replaced by a coupling-sleeve. The toothed wheels r and s are connected to the wheels o and a; by chains. Ihe action of this arrangeinent is as follows: On starting the auxiliary niotor thetoothed wheel e engages and drives the toothed wheel rt' of the power-shaft y. y

rlhe latter transmits movement to the wheel s, whose clutch-pieces n, are in engagement with the pin L. Directly the motor is started the disengagement takes placein the wellknown manner. The shaft g, which has acquired a higher velocity, throws the clutchpieces fn, back into the spiral slots of the toothed wheel r, so that the toothed wheel s is displaced laterally on the shaft g. lf, owing to premature liring, the power-shaft r/ revolves backward, the wheel s turns in a reverse direction to that of the shaft g/ of the auxiliary motor; The wheel s being connected by a chain to the wheel and this latter being mounted loose on the shaft y, the

Vformer is likewise driven in a reverse direction, and hence the disengagement of the toothed wheels and e 1s e'ected. The wheel c being` mounted fast on the power or driving shaft and being connected by a chain with the wheel Athis latter rotates in the contrary direction to that of the toothed wheel s, so that there is at the same time disengagement between the wheels i' and s'that is to say, of the starting mechanism and the motor.

So as not to necessitate the complete removal of the arrangement and to prevent continual friction between the coupling devices the wheel s is held on its laterally-displaced position by a pin t, taking into a groove u, formed in an extension of the power-shaft` so that the starting mechanism cannot regain its initial position so long as the motor is at work.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim isl. A starting mechanism for motors, comprising a shaft having' projections, a pair of relatively rotatable elements loosely mounted on the shaft, one of said elements having helical clutch-pieces and the other havingslots to permit of said clutch-pieces engaging the projections on the shaft, said slotted member adapted to cause said clutch-pieces to disengage from the shaft when the shaft rotates in an opposite direction.

2. A starting mechanism for motors, comprising a shaft, a clutch carried thereby, an auxiliary crank mounted upon the shaft and provided witha sleeve and slots,acrank mounted upon said sleeve and provided with clutchpieces, said clutch-pieces adapted to extend through the slots in the auxiliary crank and engage the clutch on the shaft, said clutchpieces further adapted to automatically move out of engagement with the clutch carried by the shaft whenA said shaft assumes a greater velocity than the crank and thereby disconnect said cranks from the shaft.

3. A starting mechanism for motors, comprising a shaft, a clutch carried thereby, an auxiliary crank provided with slots and a sleeve, said sleeve adapted to be loosely mounted on the shaft, a main crank mounted on said sleeve and provided with clutch-pieces, said clutch-pieces adapted to extend through the slots in the auxiliary crank'and engage the clutch on the shaft, said main crank further provided with a cam-slot, and a pin secured to said sleeve and adapted to move in said cam-slot for disengaging said clutch-pieces from the clutch on the shaft when the shaft is rotated in an opposite direction owing to back firing, said clutch-pieces further adapted to automatically disengage with said shaft when the latter assumes a greater velocity than said clutch-pieces.

4. In astarting mechanism for motors, the combination with a shaft, of an auxiliary crank mounted thereon, a main crank carried' by said auxiliary crank and provided with means extending through said auxiliary crank IIO for connecting the two cranks together, said means further adapted to connect with the shaft, thereby connecting the two cranks thereto to permit of normally rotating the shaft for starting the engine, said means fur ther adapted to automatically disconnect the cranks from the shaft when the latter is caused to rotate in an opposite direction, or when it assumes a greater velocity than said cranks.

5. A starting mechanism foi motors, comprising a shaft provided with a clutch-piece, an auxiliary crank mounted thereon and provided with slots having the end walls thereof beveled, a main crank provided with clutchpieces adapted to traverse said slots and engage with the clutch-piece of the shaft for imparting movement to said shaft when said cranks are rotated, said clutch-pieces of the main vcrank further adapted when the shaft rotates in an opposite direction to move against the beveled end walls of said slots and thereby be disengaged from the clutch on said shaft.

6. In a starting mechanism for motors, a shaft provided with a projection, and a plurality of axial ly-movable members loosely carried by the shaft, one of them having spiral projections and the other having spiral slots to receive said spiral projections for permitting the latter to engage with the projections on the shaft and turn the shaft in a direction to start the motor.

7. A starting mechanism for motors, comprising` a shaft, a clutch carried thereby, an auxiliary crank mounted upon the shaft and provided with slots having the end walls thereof beveled, a main crank provided with clutch-pieces adapted to traverse said slots and engage with the clutch-pieces on the shaft for imparting movement to said shaft when said cranks are rotated, said clutch-pieces on the main crank further adapted when the shaft rotates in an opposite direction to move against the beveled end walls of said slots and thereby be disengaged from the clutch on the shaft, one of said handles being substantially segment-shaped in cross-secti0n and adapted to partially overlap the other of said handles, whereby said handles may be moved independently or together.

8. A starting mechanism for motors, comprising a shaft having avprojection, an auxiliary crank loosely mounted on the shaft and provided with a slot, a main crank mounted on said shaft and provided with clutch means adapted to extend through said slot and engage the projection on the shaft for starting the engine, and a connection between said auxiliary and main cranks, said connection adapted when said main crank is turned in one direction with relation to the auxiliary crank to cause said clutch means to traverse said slot and engage the projection on the shaft and to cause said main crank to move out of engagement with the shaft when said shaft is rotated in an opposite direction owing to premature firing.

1n witness whereof I have hereunto `set my hand in presence of two witnesses.

VILH. HAGSPIEL.

Wfitncsscs:

PAUL E. GoLnsoI-itnDT, EnNs'r ENTENMAN. 

